Art of weaving wide mesh fabric



April 8, 1947. H. KITTNER ART OF WEAVING WIDE MESH FABRIC Filed May15,1946 2 Sheets-Sheet 1 I0 INVENTOIL.

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"' WHIP- Patented Apr. 8, 1947 UNITED ZAltJZYS STATES PATENT GFHQE;

ART OF'WEAVING WIDE MESH Fannie Harry Kittner, New York, N. Y.

Application May '15, 1946; .Serial' No. 669,744

6 Claims. 1

This invention relates to the art of weaving wide or open mesh fabricand has particular reference to the art of weaving canvas adapted toform the foundation for needlepoint and petit point tapestries and thelike.

The invention comprehends a loom provided with means for spacing weftthreads the desired distance apart in the weaving of canvas and the likeby which an open mesh fabric is produced in which the intersticesbetween adjacent weft threads are of the same length throughout thefabric or in which the weft threads are so spaced that alternateinterstices are of the same length and intermediate interstices ofshorter length.

The invention also has for an object the provision of a tapered toothstructure mounted for reciprocatory movement to dispose the teeththereof between the warp threads prior to the incorporation of the weftthread therewith to thereby provide an abutment against which the weftthread is positioned and spaced from the previously woven weft thread.

With the foregoing and other objects in View reference is now made tothe following specification and accompanying drawings in which anembodiment of the invention is illustrated.

In the drawings:

Fig. 1 is a side view of a loom constructed in accordance with theinvention.

Fig. 2 is a top plan view thereof.

Fig. 3 is an end view of the same.

Fig. 4 is an enlarged fragmentary perspective view of the spacingstructure with the tapered teeth thereof in partially inserted positionbetween the warp threads at the base of the shed.

Fig. 5 is a fragmentary vertical sectional view showing one of the teethof the spacing structure in position and a weft thread beat against thetooth by the reed,

Fig. 6 is a fragmentary plan View illustrating the teeth in sectionbetween the warp and weft threads.

Referring to the drawings by characters of reference, th loom indicateddiagrammatically by the reference character It) consists of the usualconstruction of warp beam l l and cloth beam l2 which are mounted forrotation in any suitable frame and intermediate the said beams a pair ofheddles l3 and i i are supported by the frame for vertical reciprocatorymovement to form sheds between rows of warp threads l5 trained throughthe eyes it of the heddles. The weft threads I! are passed through theopen sheds by means of a shuttle (not shown) after which guide waystherefor.

bars are provided with one or more stops for 2 each weft thread is beaton the fabric [9 by means of a reed 2e pivoted to the frame.

In order to provide means for spacing the weft threads I! so as toproduce the desired size of interstices therebetween reciprocatory meansis provided for insertion between the Weft threads at the base of theshed and adjacent the woven fabric 19. As illustrated the said meansconsists of a transversely extending bar it formed with a series oftapered teeth 22 which bar is carried by a cross head 23 mounted forvertical reciprocatory movement in aligned channel shaped members 25secured to the frame and forming The channel shaped memlimiting thedownward movement of the cross head and for positioning the teeth 22with reference to the fabric l9. IAS illustrated the stops consists ofheaded elements 26 protruding inwardly through openings 21 in thechannel shaped members 25 with the inner ends of the said elementsextending into the channels thereof for engagement below the crosshead23 to limit the downward movement thereof. The headed elements 25 areadapted to be selectively positioned in any of the openings 21 so as toform the desired size of interstices between adjacent weft threads.

The teeth 22 are of elongated formation and taper downwardly from thebar 2| so that the size of the interstices between adjacent weft threadswill be in relation to the width of the teeth between the tapered facesthereof at the location where the teeth are disposed between the warpthreads. Thus the teeth 22 may be arranged with a wide portion thereofdisposed between the warp threads so that when the weft thread isinsorted through the shed in advance of the teeth and the reed 20 beatsthe weft thread against the teeth which forms a stop therefor thespacing or interstices between the cast weft thread and the previouslywoven weft thread will be approximately the width of said teeth betweenthe tapered faces thereof thereby forming a relatively wide or open meshfabric. If desired, alternate rows may be arranged with differentlengths of interstices by alternately inserting the teeth at differentelevations between the warp threads which is accomplished by alternatelyvarying the position of the headed stop elements 26 in the openings Z'l.

The width or distance between adjacent warp threads may be obtained inthe usual manner by providing heddles l3 and M having eyes i 6 spacedthe desired distance apart so that adjacent warp 1. The method ofproducing an open mesh 1 fabric by weaving comprising moving two groupsof warp threads to form an open shed, inserting teeth between certain ofthe adjacent warp threads at the base of the shed, inserting a weftthread through said shed at the rear of said teeth, beating-up said weftthread against said teeth, closing said shed and removing the teeth frombetween said warp threads. I

2. The method of producing an open mesh fabric by weaving comprisingmoving two groups of warp threads to form an open shed, insertingspacing elements in transverse alignment between adjacent warp threadsat the base of the shed, inserting a weft thread transversely throughsaid shed at the rear of said spacing elements, beating-up said weftthread against said spacing elements, moving said groups of warp threadsto close said shed and withdrawing said spacing elements from betweenthe warp threads.

3. The method of producing an open mesh fabric by weaving comprisingmoving two groups of warp threads to form an open shed, insertingtapered spacing elements in transverse alignment between the warpthreads at the base of the shed, inserting a weft thread transverselythrough said shed at the rear of said spacing elements, beating-up saidweft thread against said spacing elements, moving said groups of warpthreads to 4 i spacing elements in transverse alignment between certainof the adjacent warp threads at the base, of the shed and in advance ofthe previously woven weft thread, inserting a weft thread through saidshed at the rear of said spacing element, beating-up said weft threadagainst said spacing elements, closing said shed and removing thespacing element from between the warp threads.

5. In a loom, a pair of heddles for moving groups of warp threads toform an open shed, a reciprocatory means having transversely alignedspacing elements adapted for movement to dispose the spacing elementsbetween adjacent warp threads respectively at the base of the shed,means for inserting a weft thread through said shed at the rear of saidspacing elements, a reed movable towards and awayfrom the base of saidshed for beating-up said weft thread against said spacing elements, saidheddles being movable to close said shed and said reciprocatory meansbeing movable to withdraw the spacing means from between the warpthreads.

6. In a loom, a pair of heddles for moving groups of warp threads toform an open shed, transversely aligned spacing elements, means mountingsaid spacing elements for reciprocatory movement to dispose the samebetween certain of said, warp threads at the base of the shed, means forinserting a weft thread through said shed at the rear of Said spacingelements, a reed movable toward and away from the base of said shed forbeating-up said weft thread against said spacing elements, said heddlesbeing movable to close said shed and said spacing elements being movableto withdraw the same from between the warp threads.

HARRY IQITTNER.

REFERENCES CITED FOREIGN PATENTS Country Date German Sept. 24, 1932Number 7 559,884

